Journal article
D. G. Calatayud, E. López-Torres, M. Mendiola, C. Pastor, J. R. Procopio
2005
2005
Semantic Scholar
DOI
Cite
Cite
APA
Click to copy
Calatayud, D. G., López-Torres, E., Mendiola, M., Pastor, C., & Procopio, J. R. (2005). Structural Trends in Divalent Benzil Bis(thiosemicarbazone) Complexes.
Chicago/Turabian
Click to copy
Calatayud, D. G., E. López-Torres, M. Mendiola, C. Pastor, and J. R. Procopio. “Structural Trends in Divalent Benzil Bis(Thiosemicarbazone) Complexes” (2005).
MLA
Click to copy
Calatayud, D. G., et al. Structural Trends in Divalent Benzil Bis(Thiosemicarbazone) Complexes. 2005.
BibTeX Click to copy
@article{d2005a,
title = {Structural Trends in Divalent Benzil Bis(thiosemicarbazone) Complexes},
year = {2005},
author = {Calatayud, D. G. and López-Torres, E. and Mendiola, M. and Pastor, C. and Procopio, J. R.}
}
Abstract
Redox-related changes in the biological properties of copper bis(thiosemicarbazones) are induced by the backbone of the ligand. To get information about how these changes depend on the structural parameters, three X-ray structures of complexes with different behaviour of the benzil bis(thiosemicarbazone) ligand have been determined. These include two almost planar copper(II) complexes with different grades of deprotonation in the ligand and a ZnII complex in which the ligand acts as a monoanion and a nitrate group is bonded to the metal ion in a square-based pyramid. The changes in the backbone bond lengths agree with the variation in the ionic radius and with the grade of electronic charge delocalisation in the chelate rings; these have consequences for the coordination sphere, allowing the metal to fit slightly better into the ligand cavity, which in turn may affect the complex stability and the redox potential. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
